Alex Moore - Coastal wetlands are among the most valuable and threatened ecosystems across the globe. The functions and services provided by wetlands are numerous and include food production, disturbance regulation, and cultural uses and values. Given their threatened status, significant effort has been devoted to the conservation and restoration of these dynamic coastal landscapes. However, traditional conservation practices are conducted under an historical paradigm that focuses on but a few components of wetland ecosystems (e.g.
Open to the public.
- Thu, Sep 9, 2021, 12:30 pm
- Thu, Sep 2, 2021, 12:30 pm
Insect diversity and interactions are some of the most important aspects of biodiversity and ecology. Yet these remain poorly understood in most of the areas with high insect diversity, especially in the tropics. Recent studies suggest that insect populations are in decline, though the data to support this is patchy and biased towards temperate regions. Insects are important pollinators, predators, herbivores, parasites and nutrient cyclers in virtually all terrestrial habitats.
- Thu, Feb 18, 2021, 12:30 pm
Cancer evolution cannot be observed directly in patients, and new methodologies are needed for obtaining a quantitative understanding of this obscure process. We developed and analyzed a stochastic model of malignant transformation in the colon that precisely quantifies the process of colorectal carcinogenesis in patients through loss of tumor suppressors APC and TP53 and gain of the KRAS oncogene. Our study employs experimentally measured mutation rates in the colon and growth advantages provided by driver mutations.
- Thu, Apr 22, 2021, 12:30 pm
Urban ecosystems are intrinsically heterogenous, characterized by dynamic biotic and abiotic interactions that are not witnessed in non-urban environments. Urban flora and fauna experience a suite of novel disturbances and stressors that have led to remarkable phenotypic strategies and adaptations to cope with urban living. Despite recent groundbreaking discoveries and innovation in the fields of urban ecology and evolution, the drivers of urban heterogeneity that induce biological change are seldom articulated.
- Thu, Feb 11, 2021, 12:30 pm
- Thu, Apr 15, 2021, 12:30 pm
Germline stem cells (GSCs) in the gonads of animals are responsible for the sustained production of sperm and eggs, known as spermatogenesis and oogenesis, respectively. The Bag of marbles (bam) gene is essential for male and female fertility in the fruitfly Drosophila melanogaster and signals self-renewal and differentiation of GSCs. Surprisingly, we found that this gene has undergone strong positive selection for amino acid diversification in several closely related Drosophila species, but not in others.
- Thu, Apr 8, 2021, 12:30 pm
Dragonflies and damselflies, representing the insect order Odonata, are among the earliest flying insects with living (extant) representatives. However, unravelling details of their long evolutionary history, such as egg laying (oviposition) strategies, is impeded by unresolved phylogenetic relationships, an issue particularly prevalent in damselfly families and fossil lineages.
- Thu, Apr 1, 2021, 12:30 pm
How predictable is evolution? If we placed similar starting populations into replicated similar environments and then watched evolution happen, would each replicate population evolve in a predictable, deterministic way? Or, is evolution fundamentally unpredictable, dominated by chance events during and after colonization? Repeated evolution, often called ‘parallel evolution’, is taken as strong evidence for the role of natural selection in driving deterministic evolutionary change.
- Thu, Mar 25, 2021, 12:30 pm
- Thu, Mar 18, 2021, 12:30 pm
Among human activities, agriculture is a large emitter of greenhouse gases, the largest user of freshwater, and the largest polluter of water. Yet food is a necessity, and people want food to be inexpensive. In the Great Lakes region, North America’s breadbasket and water tower, conflicts around agriculture and water are ongoing. The Yahara Watershed around Madison, Wisconsin exemplifies these conflicts.